Balance Sheet Components - Summary of Accrued Expenses and Other Liabilities (Details) - USD ($) $ in Thousands	Jan. 31, 2022	Jan. 31, 2021
Payables And Accruals [Abstract]
Accrued expenses	$ 3,925	$ 569
Accrued income taxes payable	611	354
Liability for early exercise of unvested stock options	6	24
Sales tax payable		1,191
Total accrued expenses and other liabilities	$ 4,542	$ 2,138